On Sun, 23 May 1999, Guest section DW wrote:
> From: Sami Farin <sfarin@ratol.fi>
>
> Hi. I have Abit BX6 rev.2.0 ver.HJ, Mendocino 83.333*5.5 MHz,
> egcs-1.1.2, binutils-2.9.1.0.23, RH50+updates (a lot)...
>
> problem #1: my IBM DTTA 351350 IDE-disk isn't detected in a sane way.
...
> with kernel report
> hdd: IBM-DTTA-351350, 12897MB w/464kB Cache, CHS=26205/16/63
That's what BIOS and e.g. Hardware Info proggy say.
So other programs than the Linux kernel successfully do IDENTIFY DRIVE?
> So, this could be a disk hardware problem (does this disk report its identity
> correctly under other kernels?)
Nope. Tried also 2.2.1.
And hdparm -I ? And 2.0.34 ?
The other IDE-devices (four) are detected OK, this 13GB hd is giving
trouble (in detection phase only). It has ~13GB ext2 partition and
it works just fine.
Except from the fact that it has only 630 files,
4GB used, and fragmention level is 25%... how came?
Large files are always fragmented. See the comment in e2fsck:
/*
* Simplistic fragmentation check. We merely require that the
* file be contiguous. (Which can never be true for really
* big files that are greater than a block group.)
*/
[I know nothing about disk I/O - only about disk geometries,
and the ridiculous geometries that you reported attracted
my attention. But I like to learn.
Andre answered: this is an ATA/33 vs ATA/66 problem.
I do not really understand the answer.
Sometimes there are problems with DMA/66 when the disk allows it,
and the BIOS enables it, but the cable is no good.
However, this IBM-DTTA-351350 is not a DMA/66 drive.
Moreover, the problem seems to be only in the IDENTIFY DRIVE command.]
Andries
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